Texture evolution in equiaxed polycrystalline L10-ordered FePd during coarsening at 600 °C

The texture evolution in equiaxed polycrystalline L1 -FePd during the coarsening regime of annealing at 600 °C after cold-rolling has been investigated, using X-ray diffraction and scanning electron microscopy. A change in dominant texture was observed. Using the nomenclature established for texture description of face-centered cubic metals, the texture of the L1 -FePd develops from a brass-type texture into a strong cube-type texture during coarsening. Also, a large density of special high-angle grain boundaries emerged during coarsening, which can be described as coherent Σ2-boundaries and are associated with (90 ± 5)°-rotations about a common cube-axis between the neighboring grains. The emergence of Σ2-boundaries may play an important role for previously reported abnormalities in the grain growth kinetics.